VULNERABILITY

Red Hat: CVE-2025-3523: thunderbird: User Interface (UI) Misrepresentation of attachment URL (Multiple Advisories)

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Red Hat: CVE-2025-3523: thunderbird: User Interface (UI) Misrepresentation of attachment URL (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:H/Au:N/C:P/I:C/A:P)
Published
04/15/2025
Created
04/29/2025
Added
04/29/2025
Modified
04/29/2025

Description

When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from untrusted sources. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.

Solution(s)

  • redhat-upgrade-thunderbird
  • redhat-upgrade-thunderbird-debuginfo
  • redhat-upgrade-thunderbird-debugsource

References

  • CVE-2025-3523
  • RHSA-2025:4229

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